Polypseudorotaxanes via ring-opening metathesis polymerizations of [2]catenanes.
A bis-phenanthroline [2]catenane copper complex, consisting of one olefinic macrocycle and one nonolefinic macrocycle, underwent an entropy-driven ring-opening olefin metathesis polymerization (ROMP) to provide a polypseudorotaxane. The polymerization featured an average degree of polymerization of ca. 63 wherein the polymer was effectively saturated with threaded macrocycles. Removal of the copper led to near complete release of the macrocycles from the polymer backbone.
Kang
Songsu
S
Department of Chemistry and Biochemistry, Texas Tech University, Box 41061, Lubbock, Texas 79409-1061, USA.
Berkshire
Brandon M
BM
Xue
Zheng
Z
Gupta
Manav
M
Layode
Christianah
C
May
Preston A
PA
Mayer
Michael F
MF
D043863:Catenanes / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D043862:Rotaxanes / Q000737:chemistry*
D043863:Catenanes; D011108:Polymers; D043862:Rotaxanes